The floodplain areas within the jurisdiction of this chapter are hereby divided into the following districts:
1. Floodplain (Overlay) District – those areas identified as Zone A on the Official Floodplain Zoning Map. The boundaries shall be as shown on the Official Floodplain Zoning Map. Within these districts, all uses not allowed as permitted uses are prohibited unless a variance to the terms of this chapter is granted after due consideration by the Board of Adjustment.